Tamil Nadu Braces for Yet Another Heavy Rain Spell; Chennai, Tiruvallur, Kancheepuram on Orange Alert from Nov 25-27 | The Weather Channel – Articles from The Weather Channel | weather.com – The Weather Channel

According to the India Meteorological Department (IMD), isolated heavy showers are set to lash Tamil Nadu over the next five days. Moreover, isolated very heavy falls could also be on the cards over some parts of the state from Thursday to Saturday, November 25-27.

These conditions will be caused by a cyclonic circulation located over the central parts of south Bay of Bengal, which will also aid the formation of a low-pressure area over southwest Bay of Bengal during the next 24 hours. This low-pressure is then expected to move west-northwestwards, towards Sri Lanka and south Tamil Nadu coast.

Adding to the wet weather will be a trough that runs from this cyclonic circulation to south Tamil Nadu, across southwest Bay of Bengal, in lower levels.

In view of the aforementioned rainfall predictions, the IMD has issued an orange alert over the state for the next five days. The advisory urges residents to ‘be prepared’ for rough conditions.

Within Tamil Nadu, the districts expected to witness heavy rains for the next 24 hours include Mayiladuthurai, Nagapattinam, Tiruvarur, Thanjavur, Ramanathapuram, Toothukudi, Tirunelveli and Kanyakumari, as per IMD Chennai. The heavy rains over the latter four will continue on Thursday as well.

Several other districts, such as Mayiladuthurai, Nagapattinam, Tiruvarur, Thanjavur, Pudukkotai, Vellore, Ranipet, Tiruppatur, Tiruvannamalai and Ramanathapuram, will also experience heavy rain spells on Friday and Saturday.

Over the course of this month, multiple rain spells induced by low-pressure systems and assisted by the northeast monsoon winds have lashed Tamil Nadu and its neighbouring states, causing floods, damage and destruction all across the southern peninsular region.

In fact, since the beginning of the post-monsoon season on October 1, Tamil Nadu has collectively recorded 533.5 mm rainfall—a whopping 64% ‘large excess’ as compared to its long-term average for the period between October 1 and November 23 (324.9 mm).

Within the state, 23 of the total 38 districts have recorded ‘large excess’ precipitation, 12 have registered ‘excess’ rainfall figures, and just 3 have witnessed ‘normal’ rainfall. Villupuram, at 942.7 mm, has been the wettest district in this period, closely followed by Chennai at 923 mm.

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